{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-32739", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-13T15:02:00.628Z", "datePublished": "2026-05-19T19:10:03.585Z", "dateUpdated": "2026-05-19T19:10:03.585Z"}, "containers": {"cna": {"title": "libheif is Vulnerable to Infinite Loop DoS via stts Sample Duration Lookup", "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c"}, {"name": "https://github.com/strukturag/libheif/releases/tag/v1.22.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/strukturag/libheif/releases/tag/v1.22.0"}], "affected": [{"vendor": "strukturag", "product": "libheif", "versions": [{"version": "< 1.22.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-19T19:10:03.585Z"}, "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0."}], "source": {"advisory": "GHSA-j9g7-q9hv-gq8c", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0."}], "id": "CVE-2026-32739", "lastModified": "2026-05-19T21:02:58.987", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-19T20:16:18.780", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/releases/tag/v1.22.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "libheif: libheif: Denial of Service via crafted HEIF sequence file", "id": "2479971", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479971"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-835", "details": ["A flaw was found in libheif, a HEIF and AVIF file format decoder and encoder. A remote attacker could exploit this vulnerability by providing a specially crafted HEIF (High Efficiency Image File Format) sequence file. This would trigger an infinite loop during file parsing, consuming 100% CPU indefinitely and leading to a Denial of Service (DoS) condition."], "name": "CVE-2026-32739", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "glycin-loaders", "product_name": "Red Hat Enterprise Linux 10"}], "public_date": "2026-05-19T19:10:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-32739\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-32739\nhttps://github.com/strukturag/libheif/releases/tag/v1.22.0\nhttps://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.22.0)"}}], "enrichment": {"confidence": 94.0, "confidence_source": "matching", "scores": [{"score": 94.0, "source": "matching"}]}, "original": {"product": "libheif", "source": "cna", "vendor": "strukturag"}, "product": "libheif", "vendor": "struktur"}], "created": "2026-05-19T21:30:14.352748+00:00", "updated": "2026-05-20T10:15:15.976447+00:00", "vendors": ["struktur", "struktur$PRODUCT$libheif"]}